New primary method for the measurement of pressure developed
31.03.2020
For the first time in practice, PTB has thus succeeded in realizing a groundbreaking theoretical approach which had already been formulated by Mike Moldover of NIST (the U.S. national metrology institute) as early as 1998.
The new pressure measurement method can be used to check the most accurate pressure gauges, for which PTB is known as the world leader. Checking such instruments was formerly possible in the range of up to 100 000 pascals only; now 7 million pascals are feasible. A comparison between mechanical and electrical pressure measurements has thus been carried out for the first time with a relative uncertainty of less than 5 :· 10−6